Malicious PDF — malware analysis report

Static analysis result for SHA-256 822e28feaf748b8a…

MALICIOUS

PDF

72.2 KB Created: 2020-10-17 15:52:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: c903c2f88aecaf8612bac9a7e0940565 SHA-1: b97e18e611ee412a948477b26a3f826bf5c8b0bf SHA-256: 822e28feaf748b8a818a55a9616cf90a87fe0d0bae9e22844e5df65d26fc3bff
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://cctraff.ru/123?keyword=muslim+pro+indonesia+apk In PDF document text
    • https://cdn-cms.f-static.net/uploads/4372086/normal_5f8a88fcc0278.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367277/normal_5f88002ea15ea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366003/normal_5f874749a67d2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369626/normal_5f88fa6720c88.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368751/normal_5f883963bc658.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368954/normal_5f8971a408c16.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375339/normal_5f8ad5c37a046.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374177/normal_5f88dc6b37523.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370284/normal_5f88cabbbe8d5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365580/normal_5f88643f84af6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365594/normal_5f871917ce82b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/228a5b2b-9546-4f7e-b0f0-d26df2ffc48d/fajazogolufovire.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a4e5cac-aa2e-41b1-8501-77105e3859af/15073656940.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0be8b4b-c4ef-4589-9970-e67a3b9f5266/17788776810.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/036af9d5-0ec2-4e1a-84fb-494c5ef236e3/zuxijuguni.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0fd27b9f-efd8-4019-9912-db42ddef4242/9039712468.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/318bcbce-776d-4cef-b94f-5dbee54ca795/29286357071.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d2da676-7ca0-453d-a67d-481006e9e509/9885746938.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dbe984f8-6f33-48dd-a976-929c2a282998/tipos_de_flagelos_bacterianos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2937/2832/files/nail_polish_stickers_target.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0469/0581/files/mr._cs_car_wash.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9067/1771/files/wusalasarakuxanemadurodut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/4490/5375/files/89980383891.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_007_off0000d2d9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xD2D9 27968 bytes
SHA-256: 2e8ca92bcd5540065d04f7aaf998acadafd23a4980f07cc0d56f30e0d3b40be5
font_00_sfnt_off000074c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74C9 4132 bytes
SHA-256: f59fe676dfbb4747df26e1fd41e1e1eba86de6b4ba6b733b7ff04b570d9195fe
font_01_sfnt_off0000836e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x836E 4976 bytes
SHA-256: cc81300d6ed7d8807ffa952cad03f8848c82267bf5f1ae12db53598b6072f162
font_02_sfnt_off00009428.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9428 6640 bytes
SHA-256: 2da83060ad210a9a1743b04a22b2cc5ebb14ba7af64fbaa5f25da2d26a1b3d84
font_03_sfnt_off0000a5c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA5C6 14388 bytes
SHA-256: 7683235a82276cac66818c8413c1a3be2aafa72eaddbae59aa768e9291190bd1
font_05_sfnt_off00010433.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10433 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

Open this report in the interactive analyzer, or submit your own file for analysis.